1 files changed, 13 insertions, 1 deletions

diff --git a/kernel/audit.c b/kernel/audit.c
index 9c4f1af0c794..6f344b44d3d3 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -68,7 +68,7 @@ static int	audit_failure = AUDIT_FAIL_PRINTK;
 
 /* If audit records are to be written to the netlink socket, audit_pid
  * contains the (non-zero) pid. */
-static int      audit_pid;
+int             audit_pid;
 
 /* If audit_limit is non-zero, limit the rate of sending audit records
  * to that number per second.  This prevents DoS attacks, but results in
@@ -79,6 +79,10 @@ static int	audit_rate_limit;
 static int      audit_backlog_limit = 64;
 static atomic_t audit_backlog       = ATOMIC_INIT(0);
 
+/* The identity of the user shutting down the audit system. */
+uid_t           audit_sig_uid = -1;
+pid_t           audit_sig_pid = -1;
+
 /* Records can be lost in several ways:
    0) [suppressed in audit_alloc]
    1) out of memory in audit_log_start [kmalloc of struct audit_buffer]
@@ -321,6 +325,7 @@ static int audit_netlink_ok(kernel_cap_t eff_cap, u16 msg_type)
         case AUDIT_SET:
         case AUDIT_ADD:
         case AUDIT_DEL:
+        case AUDIT_SIGNAL_INFO:
                 if (!cap_raised(eff_cap, CAP_AUDIT_CONTROL))
                         err = -EPERM;
                 break;
@@ -344,6 +349,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
         struct audit_buffer     *ab;
         u16                     msg_type = nlh->nlmsg_type;
         uid_t                   loginuid; /* loginuid of sender */
+        struct audit_sig_info   sig_data;
 
         err = audit_netlink_ok(NETLINK_CB(skb).eff_cap, msg_type);
         if (err)
@@ -419,6 +425,12 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
                 err = -EOPNOTSUPP;
 #endif
                 break;
+        case AUDIT_SIGNAL_INFO:
+                sig_data.uid = audit_sig_uid;
+                sig_data.pid = audit_sig_pid;
+                audit_send_reply(NETLINK_CB(skb).pid, seq, AUDIT_SIGNAL_INFO, 
+                                0, 0, &sig_data, sizeof(sig_data));
+                break;
         default:
                 err = -EINVAL;
                 break;